/Engine/Source/Runtime/Engine/Classes/Engine/SkeletalMesh.h
Returns vertex color data by position. For matching to reimported meshes that may have changed or copying vertex paint data from mesh to mesh.
VertexColorData Returns a map of vertex position and their associated color.
[TMap](API\Runtime\Core\Containers\TMap)< FVector3f, [FColor](API\Runtime\Core\Math\FColor) > GetVertexColorData ( const uint32 PaintingMeshLODIndex ) const